[perl #72948] [BUG] Rakudo doesn't catch use of non-predeclared variables in routine signatures

[Carl Mäsak]

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<jnthn> rakudo: sub foo($x where { $x == $y }, $y) { }; foo(1,2)
<p6eval> rakudo 3704a2: OUTPUT«No applicable candidates found to
dispatch to for 'infix:<==>'␤current instr.: '_block51' pc 434
(EVAL_1:170)␤»
<masak> jnthn: no, 'until' is '!while'.
<jnthn> masak: Ah, ok
<jnthn> Then error makes sense I guess.
<masak> aye.
* masak submits a LTA rakudobug for that last one :)
<masak> std: sub foo($x where { $x == $y }, $y) { }
<p6eval> std 29780: OUTPUT«Potential difficulties:␤  Variable $y is
not predeclared [...] ok 00:01 110m␤»
<masak> that's a lot better.
<jnthn> Yeah